A steam cleaning device for a tank truck

Abstract

The application discloses an oil tank truck steam cleaning device and relates to the technical field of oil tank truck cleaning.The oil tank truck steam cleaning device comprises a steam generating mechanism and a fixing mechanism.The fixing mechanism comprises a supporting pipe, a supporting plate and a fixing pipe.A steam turbine is arranged in the fixing pipe, a steam outlet is arranged at the side end of the fixing pipe, the steam turbine is rotationally connected with the inner wall of the fixing pipe, the side wall of the steam turbine is fixedly connected with a rotating pipe through a limiting ring, the limiting ring is embeddedly connected with the steam outlet, an extension mechanism is arranged on the outer surface of the rotating pipe, a spraying mechanism is arranged at the bottom of the extension mechanism, the spraying mechanism comprises a guide pipe and a first booster, the upper and lower ends of the guide pipe are fixedly connected with the extension mechanism and the first booster respectively, and a vertical nozzle is fixedly connected with the bottom wall of the first booster.The steam is forced to rotate mechanically, so that the steam uniformly acts on the oil stains on the side wall and the bottom of the tank body, and the local cleaning blind area caused by the limited steam flow path is effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of oil tanker cleaning technology, specifically an oil tanker steam cleaning device. Background Technology

[0002] After transporting petroleum, chemical liquids, and other media, oil tankers typically have oil stains, wax, asphalt deposits, and other residues remaining on the inner walls of their tanks. Over time, these residues accumulate, affecting the purity of subsequently loaded media and potentially posing safety hazards. Therefore, regular cleaning of oil tankers is necessary.

[0003] In the existing technology, oil tanker cleaning usually adopts steam cleaning method. High temperature steam is generated by steam generator and introduced into the tank through the feed port set on the tank body, so that the steam comes into contact with the oil stains attached to the tank wall to achieve heating, softening and peeling.

[0004] However, tank trucks typically have a horizontally mounted, cylindrical, enclosed structure, with the feed inlet usually located at the top. Steam is introduced into the tank from the top. Under this structural condition, once the steam enters the tank, there is usually no structure to guide or control its flow path; it mainly relies on natural diffusion and thermal buoyancy for distribution.

[0005] During the steam propagation process, due to continuous condensation and heat release, the temperature and pressure of the steam gradually decrease along the propagation path. At the same time, the steam tends to accumulate in the upper part of the tank, resulting in insufficient steam action in the bottom and corner areas of the tank, and even forming local areas with insufficient steam action, causing uneven steam action in different areas inside the tank.

[0006] For the reasons mentioned above, under the existing steam cleaning method, there is a tendency for some areas inside the oil tank to be not cleaned sufficiently, which affects the overall cleaning effect and efficiency.

[0007] Therefore, how to improve the uniformity of steam action inside the tank, thereby improving the cleaning effect, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, this invention proposes a steam cleaning device for oil tankers. This invention primarily addresses the problem of uneven steam distribution inside the oil tanker, leading to inadequate cleaning in certain areas.

[0009] The technical solution adopted by this invention to solve its technical problem is: A steam cleaning device for oil tankers includes a steam generating mechanism and a fixing mechanism. The steam generating mechanism includes a steam generator, a steam guide pipe, and a distribution pipe. The fixing mechanism is provided in several groups at equal intervals along the length of the distribution pipe. The top of the fixing mechanism is detachably connected to the distribution pipe. The fixing mechanism includes a support pipe, a support plate, and a fixing pipe. The upper and lower ends of the support plate are fixedly connected to the support pipe and the fixing pipe, respectively. A steam turbine is provided inside the fixing pipe. A steam outlet is opened at the side end of the fixing pipe. The steam turbine is rotatably connected to the inner wall of the fixing pipe. The side wall of the steam turbine is fixedly connected to the rotating pipe through a limiting ring. The limiting ring is embedded in the steam outlet. A telescopic mechanism is sleeved and connected to the outer surface of the rotating pipe. A spraying mechanism is provided at the bottom of the telescopic mechanism. The spraying mechanism includes a guide pipe and a first pressure booster. The upper and lower ends of the guide pipe are fixedly connected to the telescopic mechanism and the first pressure booster, respectively. A vertical nozzle is fixedly connected to the bottom wall of the first pressure booster. A horizontal nozzle is fixedly connected to the side wall of the first pressure booster. A connecting mechanism is fixedly connected to the outer surface of the first pressure booster.

[0010] As a further aspect of the present invention: a number of steam valves are provided at equal intervals along the length of the diversion pipe, and the steam valves are arranged at intervals between the support pipes.

[0011] As a further embodiment of the present invention: the limiting ring is fixedly connected to the steam turbine and the side wall of the rotating pipe on both sides respectively, the limiting ring is rotatably connected to the inner wall of the steam outlet, and the limiting ring is in contact with the side wall of the fixed pipe.

[0012] As a further aspect of the present invention: a second booster is provided at the end of the first booster away from the fixed pipe, the second booster is mounted on the connecting mechanism, a bent pipe is provided between the second booster and the first booster, a plurality of vertical nozzles are fixedly connected to the bottom wall of the second booster, and the two ends of the bent pipe are fixedly connected to the first booster and the second booster respectively, and the bent pipe has extensibility.

[0013] As a further embodiment of the present invention: the connecting mechanism includes a connecting cover, a torsion spring, and a connecting frame. The outer surface of the first booster is fixedly connected to the connecting cover. Rotation holes are respectively opened at both ends of the connecting cover. The torsion spring is fixedly connected to the side wall of the second booster and rotatably connected to the inner wall of the rotation hole. The connecting frame is sleeved on the torsion spring. Both ends of the connecting frame are fixedly connected to the connecting cover and the torsion spring, respectively. A limit frame is fixedly connected to the end of the second booster away from the torsion spring. The limit frame is rotatably connected to the inner wall of the rotation hole and fits against the side wall of the connecting cover.

[0014] As a further aspect of the present invention: the bottom end of the connecting cover is provided with a plurality of peeling heads, the peeling heads are tooth-shaped and the bottom end of the peeling heads is arc-shaped.

[0015] As a further aspect of the present invention: a contact cover is fixedly connected to the bottom wall of the second booster, and a plurality of peeling heads are provided on the bottom wall of the contact cover. The bottom wall of the contact cover is fixedly connected to the peeling heads, and the contact cover is in contact with the inner wall of the connecting cover.

[0016] As a further embodiment of the present invention: the guide tube is sleeved on the rotating tube, the inner wall of the guide tube is slidably connected to the rotating tube, and the upper and lower ends of the telescopic mechanism are fixedly connected to the outer wall of the rotating tube and the top end of the guide tube, respectively.

[0017] As a further embodiment of the present invention: the telescopic mechanism includes a connecting ring, a telescopic spring and a sealing ring. The connecting ring is fixedly connected to the outer wall of the rotating tube, the sealing ring is fixedly connected to the top wall of the guide tube, and the telescopic spring is sleeved on the rotating tube. The upper and lower ends of the telescopic spring are fixedly connected to the connecting ring and the sealing ring, respectively.

[0018] As a further embodiment of the present invention: positioning grooves are provided on both sides of the rotating tube along the height direction, and positioning plates are embedded and connected in the positioning grooves. The inner wall of the positioning groove is slidably connected to the positioning plate, and the positioning plate is fixedly connected to the inner wall of the sealing ring.

[0019] The beneficial effects of this invention are as follows: 1. This invention utilizes a steam turbine installed within a fixed pipe, employing high-temperature steam to drive its rotation. A mechanical connection between the turbine and the rotating pipe, via a limiting ring, converts fluid kinetic energy into mechanical rotational kinetic energy. This design overcomes the passive distribution mode of existing technologies, where steam relies solely on natural diffusion and thermal buoyancy. The rotating pipe drives a bottom-mounted injection mechanism (guide pipe, booster) to dynamically rotate and inject steam within the tank, enabling high-temperature, high-pressure steam to actively cover all angles of the tank's inner wall. Compared to existing technologies where steam introduced from the top tends to accumulate at the top and has insufficient effect at the bottom, this solution, through mechanically forced rotation, ensures uniform steam action on the tank's sidewalls and bottom oil stains, effectively avoiding blind spots in cleaning caused by limited steam flow paths.

[0020] 2. In this invention, a first and a second booster are incorporated into the spray mechanism. As steam sequentially passes through the contraction and booster sections, it forms a high-speed, high-pressure steam flow, enhancing the spray impact capability. When the high-pressure steam is ejected through the vertical and horizontal nozzles, it not only possesses extremely high flow velocity, directly impacting and thermally softening stubborn oil stains, but also achieves a physical cleaning effect through the toothed peeling head at the bottom of the connecting mechanism. When the rotating peeling head contacts the inner wall of the tank, its arc-shaped bottom design effectively scrapes off the softened oil layer while preventing the device from jamming. This synergistic mechanism of first pressurizing and impacting the oil stains, followed by mechanical peeling, shortens the cleaning cycle compared to traditional steam cleaning methods that rely solely on the condensate from the steam mixing with the oil stains for natural shedding.

[0021] 3. This invention incorporates a telescopic mechanism (including a telescopic spring, a sealing ring, and a positioning groove). During operation, the elastic tension provided by the telescopic spring pushes the guide tube and bottom spray mechanism downwards, ensuring that the peeling heads at the bottom of the connecting cover and the contact cover always slide tightly against the inner wall of the tank. This design solves the problem of rigid connection devices being unable to adapt to tank deformation or installation deviations. Simultaneously, the tiny gaps carved by the peeling heads on the tank wall form a dynamic return flow channel, preventing pressure buildup in the spray chamber from obstructing steam spray and guiding the orderly discharge of the condensed steam and oil mixture. This ensures efficient replacement and flow of the cleaning medium in its physical structure. The condensate formed by the condensed steam and the peeled oil flow out along the gaps between the peeling heads and ultimately converge at the drain port at the bottom of the tank for discharge. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fixing mechanism structure in this invention; Figure 3 This is a top view of the fixed tube structure in this invention; Figure 4 In this invention Figure 3 AA structural cross-sectional view; Figure 5 In this invention Figure 4 Enlarged schematic diagram of the structure at point B; Figure 6 This is a schematic diagram of the position of the limiting ring structure in this invention; Figure 7 This is a schematic diagram of the steam turbine structure in this invention; Figure 8 This is a schematic diagram of the telescopic mechanism structure in this invention; Figure 9 This is a schematic diagram of the peeling head structure in this invention; Figure 10 This is a schematic diagram of the connecting cover structure in this invention; Figure 11 This is a schematic diagram of the bent tube structure in this invention.

[0024] In the diagram: 1. Steam generating mechanism; 101. Steam generator; 102. Steam guide pipe; 103. Diverter pipe; 104. Steam valve; 2. Fixing mechanism; 201. Support pipe; 202. Support plate; 203. Fixing pipe; 204. Steam turbine; 205. Limiting ring; 206. Rotating pipe; 3. Injection mechanism; 301. Guide pipe; 302. First booster; 303. Bending pipe; 304. Vertical nozzle; 305. Second booster; 306. Horizontal nozzle; 307. Limiting frame; 4. Connecting mechanism; 401. Connecting cover; 402. Torsion spring; 403. Connecting frame; 404. Peeling head; 405. Contact cover; 5. Telescopic mechanism; 501. Connecting ring; 502. Telescopic spring; 503. Positioning groove; 504. Sealing ring; 505. Positioning plate. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figures 1 to 7 As shown, a steam cleaning device for oil tankers includes a steam generating mechanism 1 and a fixing mechanism 2. The steam generating mechanism 1 includes a steam generator 101, a steam guide pipe 102, and a distribution pipe 103. The fixing mechanism 2 is provided with several sets of components equidistantly along the length of the distribution pipe 103. The top of the fixing mechanism 2 is detachably connected to the distribution pipe 103. The fixing mechanism 2 includes a support pipe 201, a support plate 202, and a fixing pipe 203. The upper and lower ends of the support plate 202 are fixedly connected to the support pipe 201 and the fixing pipe 203, respectively. A steam turbine 204 is provided inside the fixing pipe 203, and a steam outlet is opened at the side end of the fixing pipe 203. The steam turbine 204 is connected to the fixing pipe 203. 03 The inner wall is rotatably connected. The side wall of the steam turbine 204 is fixedly connected to the rotating pipe 206 through the limiting ring 205. The limiting ring 205 is embedded and connected to the steam outlet. The outer surface of the rotating pipe 206 is fitted with a telescopic mechanism 5. The bottom of the telescopic mechanism 5 is provided with a spray mechanism 3. The spray mechanism 3 includes a guide pipe 301 and a first booster 302. The upper and lower ends of the guide pipe 301 are fixedly connected to the telescopic mechanism 5 and the first booster 302, respectively. The bottom wall of the first booster 302 is fixedly connected with a vertical nozzle 304. The side wall of the first booster 302 is fixedly connected with a horizontal nozzle 306. The outer surface of the first booster 302 is fixedly connected with a connecting mechanism 4.

[0027] The fixed pipe 203 has a through steam flow channel inside, a steam inlet at the top, and a guide cavity at the bottom to guide the steam to flow towards the steam turbine 204. The first booster 302 includes a contraction section, a booster section, and a diffuser section connected in sequence. The inner diameter of the contraction section is smaller than the inner diameter of the guide pipe 301. When the steam flows through the contraction section, the flow velocity increases, and high-pressure steam is formed in the booster section. The bottom end of the guide pipe 301 can be fixedly connected to the first booster 302 by a threaded connection method of existing technology.

[0028] During operation, each set of fixing mechanisms 2 is simultaneously inserted into the tank body through the inlet. The fixing mechanism 2, along with the injection mechanism 3, connecting mechanism 4, and telescopic mechanism 5, is inserted into the tank body. Then, the support plate 202 is brought into contact with the top wall of the tank body's inlet. A flange, a standard feature, is fixedly connected to the support plate 202, and this flange is bolted to the flange at the tank truck's inlet. At this time, the steam generator 101 operates, delivering steam through the steam guide pipe 102 to the distribution pipe 103. The distribution pipe 103 then directs the steam into each set of fixing mechanisms 2. The steam guide pipe 102 is linear, facilitating the movement of the distribution pipe 103 on the tank body when the fixing mechanism 2 is installed. Each branch connection of the distribution pipe 103 uses the same diameter design, ensuring a consistent steam flow rate into each fixing mechanism 2.

[0029] When steam enters the support pipe 201 from the branch pipe 103, it passes through the support plate 202 and enters the inner cavity of the fixed pipe 203. When the steam flows vertically downward to the end of the fixed pipe 203, it begins to contact the steam turbine 204, causing the steam turbine 204 to rotate. Simultaneously, steam flows from the steam outlet at the side end of the fixed pipe 203 into the limiting ring 205, passes through the limiting ring 205, and enters the rotating pipe 206. The steam then flows along the rotating pipe 206 into the guide pipe 301. When the steam flows along the inner wall of the guide pipe 301 to the first booster 302, the first booster 302 pressurizes the steam, and then discharges it from the vertical nozzle 304 and the horizontal nozzle 306.

[0030] In this invention, when steam drives the steam turbine 204 to rotate, one end of the steam turbine 204 rotates along the inner wall of the fixed pipe 203, while the other end of the steam turbine 204 drives the limiting ring 205 to rotate. The limiting ring 205 drives the rotating pipe 206 to rotate around the axis of the steam turbine 204 in the vertical direction. When the rotating pipe 206 drives the first booster 302 to rotate through the guide pipe 301, the first booster 302 sprays steam into the tank through the vertical nozzle 304 and the horizontal nozzle 306. Compared with the prior art, where steam enters the tank from the inlet and flows freely, this invention sets up a fixed mechanism 2 and a spraying mechanism 3 to evenly introduce steam into the tank, avoiding uneven distribution of steam in the tank, which leads to uneven action on the oil stains in the tank and thus insufficient cleaning of local oil stains. The steam turbine 204 includes a central hub and several circumferentially distributed arc-shaped blades. The blades are inclined towards the direction of steam flow. When the steam flows downward along the inner cavity of the fixed pipe 203, the steam impacts the blade surface and drives the steam turbine 204 to rotate around its own axis.

[0031] It should be noted that oil stains generally adhere to the inner wall of the tank. When the guide pipe 301 rotates inside the tank with the first pressure booster 302, the first pressure booster 302 pressurizes the steam. When the steam is ejected from the vertical nozzle 304, the steam velocity is relatively high. At the same time, the steam ejected from the vertical nozzle 304 directly contacts the oil stains on the inner wall of the tank. On the one hand, the steam can directly contact the oil stains through the fixing mechanism 2 and the injection mechanism 3. Compared with the prior art, which uses steam to heat-soften oil stains by introducing steam into the tank, the steam of this invention directly heat-softens the oil stains, reducing the path of contact between the steam and the oil stains. On the other hand, the steam is pressurized by the first pressure booster 302, and the steam ejected from the vertical nozzle 304 has a high velocity, which can impact the heat-softened oil stains, promoting better removal of the oil stains from the inner wall of the tank.

[0032] It should be further explained that when the first booster 302 extends into the tank, to prevent the vertical nozzle 304 at the bottom of the first booster 302 from contacting the inner wall of the tank, and to allow sufficient distance between the steam ejected from the vertical nozzle 304 and the oil stains on the inner wall of the tank, the present invention adds a connecting mechanism 4. When the first booster 302 extends into the tank, the connecting mechanism 4 first comes into contact with the inner wall of the tank, providing a limiting support for the first booster 302 and preventing the vertical nozzle 304 on the first booster 302 from contacting the inner wall of the tank. The telescopic mechanism 5 connects the guide tube 301 and the rotating tube 206 together. When the first booster 302 drives the horizontal nozzle 306 to rotate, the horizontal nozzle 306 will not contact the fixed tube 203. The horizontal nozzle 306 is arranged radially outward along the first booster 302, and its spray direction is perpendicular to the axis of the rotating tube 206.

[0033] Furthermore, the diversion pipe 103 is provided with several sets of steam valves 104 at equal intervals along its length, and the steam valves 104 are spaced apart between several support pipes 201. When the tank does not require too many fixing mechanisms 2, the fixing mechanisms 2 are removed from the diversion pipe 103, and then the steam valves 104 are used to lock the diversion pipe 103 to prevent steam from flowing out from the connection point where the fixing mechanisms 2 have been removed from the diversion pipe 103. The steam valves 104 are installed at the branch interfaces of the diversion pipe 103 and are used to control the steam flow of the corresponding fixing mechanism 2.

[0034] Furthermore, the limiting ring 205 is fixedly connected to the side walls of the steam turbine 204 and the rotating pipe 206 on both sides, the limiting ring 205 is rotatably connected to the inner wall of the steam outlet, and the limiting ring 205 is in contact with the side wall of the fixed pipe 203. In this invention, the limiting ring 205 serves to connect the steam turbine 204 and the rotating pipe 206 together, and at the same time, the limiting ring 205 transmits the rotational force of the steam turbine 204 to the rotating pipe 206. When the steam turbine 204 drives the limiting ring 205 to rotate, the limiting ring 205 rotates along the inner wall of the steam outlet. Since the limiting ring 205 is embedded and connected to the steam outlet, the limiting ring 205 provides limiting support for the side end of the steam turbine 204. The other end of the steam turbine 204 is rotatably connected to the inner wall of the fixed pipe 203 through a rotating shaft and rolling bearing, thereby ensuring the stability of the fixed pipe 203 as it rotates under the action of flowing steam. A sealing ring of the prior art can be set on the outer surface of the limiting ring 205. The sealing ring seals the gap between the limiting ring 205 and the side wall of the fixed pipe 203, thereby preventing steam leakage when passing through the limiting ring 205 from the steam outlet. The sealing ring has high temperature resistance. The steam outlet is connected to the steam flow channel inside the fixed pipe 203.

[0035] It should be noted that the limiting ring 205 is fixedly connected to the steam turbine 204 and the rotating tube 206 by welding.

[0036] like Figures 9 to 11 As shown, a second pressure booster 305 is provided at the end of the first pressure booster 302 away from the fixed pipe 203. The second pressure booster 305 is mounted on the connecting mechanism 4. A bent pipe 303 is provided between the second pressure booster 305 and the first pressure booster 302. Several vertical nozzles 304 are fixedly connected to the bottom wall of the second pressure booster 305. The two ends of the bent pipe 303 are fixedly connected to the first pressure booster 302 and the second pressure booster 305, respectively. The bent pipe 303 is extensible. The structure of the second pressure booster 305 is the same as that of the first pressure booster 302, including a contraction section, a pressure boosting section, and a diffusion section, which is used to repressurize the steam entering the second pressure booster 305.

[0037] Tanker trucks typically have multiple feed inlets on the top of their tanks. When the first booster 302 of this invention extends into the tank through one of the feed inlets, the steam sprayed from the vertical nozzles 304 fixed to the bottom wall of the first booster 302 comes into contact with the oil stains adhering to the inner wall of the tank. Because the oil stains are unevenly distributed on the inner wall, they generally adhere to the bottom of the inner wall. However, the bottom of the inner wall between the feed inlets does not receive direct steam action from the vertical nozzles 304. Although steam continuously fills the tank, and subsequent steam can thermally soften and peel off this portion of the oil stains, this phenomenon affects the effectiveness of the first booster 302.

[0038] Therefore, the present invention adds a second booster 305. When steam flows to the first booster 302, the first booster 302 divides the steam into two parts. One part of the steam is pressurized by the first booster 302 and discharged from the vertical nozzle 304 fixed to the bottom wall and the horizontal nozzle 306 fixed to the side wall of the first booster 302. The other part of the steam is transported to the second booster 305 through the bend pipe 303. The bottom wall of the second booster 305 is at the same horizontal plane as the bottom wall of the first booster 302. When steam flows to the second booster 305, the second booster 305 pressurizes the steam and then discharges it through the vertical nozzle 304 fixed to the bottom wall of the second booster 305. The steam discharged from the vertical nozzle 304 fixed to the bottom wall of the second booster 305 can compensate for the oil stains that cannot be directly acted upon by the steam. The second booster 305 added in this invention extends the effective path for the steam to directly act on the oil stains. At the same time, when the first booster 302 rotates, the first booster 302 drives the second booster 305 to rotate by driving the connecting mechanism 4.

[0039] Furthermore, the connecting mechanism 4 includes a connecting cover 401, a torsion spring 402, and a connecting frame 403. The outer surface of the first booster 302 is fixedly connected to the connecting cover 401. Rotation holes are respectively opened at both ends of the connecting cover 401. The torsion spring 402 is fixedly connected to the side wall of the second booster 305. The torsion spring 402 is rotatably connected to the inner wall of the rotation hole. The connecting frame 403 is sleeved on the torsion spring 402. Both ends of the connecting frame 403 are fixedly connected to the connecting cover 401 and the torsion spring 402 respectively. A limit frame 307 is fixedly connected to the end of the second booster 305 away from the torsion spring 402. The limit frame 307 is rotatably connected to the inner wall of the rotation hole. The limit frame 307 is in contact with the side wall of the connecting cover 401.

[0040] When the connecting cover 401 begins to pass through the inlet of the tank, the second booster 305 is in a bent state relative to the connecting cover 401, which facilitates the connecting cover 401 carrying the second booster 305 through the inlet. When the connecting cover 401 enters the interior of the tank, the torsion spring 402 is always in a compressed state. The torsion provided by the torsion spring 402 acts on the connecting frame 403, and the connecting frame 403 rotates along the inner wall of the rotating hole. The connecting frame 403 carries the second booster 305 to rotate, and the second booster 305 rotates from the bent state. When the top of the second booster 305 abuts against the connecting cover 401, the bottom wall of the second booster 305 is on the same horizontal plane as the bottom wall of the first booster 302.

[0041] When the connecting cover 401 is removed from the tank, the top wall of the second booster 305 comes into contact with the feed inlet of the tank. The second booster 305 is supported by the tank and rotates in the opposite direction. As a result, the second booster 305 continues to bend relative to the connecting cover 401, thus achieving the effect of removing the second booster 305 from the tank.

[0042] Furthermore, the bottom of the connecting cover 401 is provided with several peeling heads 404, which are tooth-shaped and have rounded bottom ends. When the connecting cover 401 comes into contact with the inner wall of the tank, the connecting cover 401 forms a channel between the vertical nozzle 304 fixed to the bottom wall of the first booster 302 and the inner wall of the tank. When steam is ejected from the vertical nozzle 304, the connecting cover 401 provides a guiding function for the steam. At the same time, the peeling heads 404 fixed to the bottom of the connecting cover 401 form a gap between the connecting cover 401 and the inner wall of the tank, preventing the steam discharged from the vertical nozzle 304 from flowing along the channel to the oil stains. This prevents the steam from being unable to be discharged from the oil stains in time, thus affecting the subsequent steam flow to the oil stains.

[0043] It should be noted that when steam flows out from between the stripping heads 404, the steam enters the interior of the tank. The stripping heads 404 prevent the bottom of the connecting cover 401 from directly contacting the oil stains on the inner wall of the tank, which would cause the connecting cover 401 to form a sealed channel through the oil stains and the inner wall of the tank. This would cause steam to accumulate inside the connecting cover 401, resulting in an increase in the air pressure inside the connecting cover 401.

[0044] When the connecting cover 401 rotates inside the tank, the connecting cover 401 slides along the inner wall of the tank with the peeling head 404. The shape of the peeling head 404 peels off the oil stains adhering to the inner wall of the tank.

[0045] Furthermore, a contact cover 405 is fixedly connected to the bottom wall of the second booster 305. The bottom wall of the contact cover 405 is provided with several peeling heads 404, and the bottom wall of the contact cover 405 is fixedly connected to the peeling heads 404. The contact cover 405 is in contact with the inner wall of the tank through the peeling heads 404, thus forming a flow channel for the steam discharged from the second booster 305. The contact cover 405, through the peeling heads 404 and the inner wall of the tank, transmits the limiting and supporting effect to the second booster 305, thereby keeping the top of the second booster 305 in a state of contact with the connecting cover 401. Simultaneously, the contact cover 405 and the connecting cover 401 limit the steam ejected from the first booster 302 and the second booster 305 around their perimeter, thus forming a unified channel. When the connecting cover 401 rotates, it drives the second booster 305 to rotate, which in turn drives the abutment cover 405 to rotate. The peeling head 404 fixed on the bottom wall of the abutment cover 405 peels off the oil stains. Compared with the prior art, where the oil stains are softened by contact with steam and then combined with water liquefied by steam to form an oil stain liquid for peeling, the peeling head 404 of this invention can directly peel off the oil stains.

[0046] like Figure 5 and Figure 8 As shown, the guide tube 301 is sleeved on the rotating tube 206, and the inner wall of the guide tube 301 is slidably connected to the rotating tube 206. The upper and lower ends of the telescopic mechanism 5 are fixedly connected to the outer wall of the rotating tube 206 and the top end of the guide tube 301, respectively. In the prior art, the tank body of an oil tanker is usually a horizontally arranged cylindrical closed structure, and the inner wall of the tank is generally elliptical. When the connecting cover 401 and the contact cover 405 slide along the inner wall of the tank, the length of the rotating tube 206 and the guide tube 301 increases as the connecting cover 401 and the contact cover 405 slide along the inner wall of the tank. In order to ensure that the connecting cover 401 and the contact cover 405 are always in contact along the inner wall of the tank, the telescopic mechanism 5 provides support for the guide tube 301. At the same time, the guide tube 301 slides along the surface of the rotating tube 206, and the overall length of the guide tube 301 and the rotating tube 206 increases, thereby ensuring that the connecting cover 401 and the contact cover 405 always slide along the inner wall of the tank.

[0047] The telescopic mechanism 5 serves to connect the guide tube 301 to the rotating tube 206.

[0048] Furthermore, the telescopic mechanism 5 includes a connecting ring 501, a telescopic spring 502, and a sealing ring 504. The connecting ring 501 is fixedly connected to the outer wall of the rotating tube 206, the sealing ring 504 is fixedly connected to the top wall of the guide tube 301, and the telescopic spring 502 is sleeved on the rotating tube 206. The upper and lower ends of the telescopic spring 502 are fixedly connected to the connecting ring 501 and the sealing ring 504, respectively.

[0049] As the guide tube 301 slides and extends along the surface of the rotating tube 206, the telescopic spring 502 begins to lengthen and remains compressed. The elastic tension provided by the telescopic spring 502 is transmitted to the sealing ring 504, which then transmits the elastic tension through the guide tube 301 to the first booster 302, and further to the connecting cover 401. Ultimately, the connecting cover 401 and the contact cover 405 remain in contact with the inner wall of the tank. The connecting ring 501 is fixed to the outer surface of the rotating tube 206, which is in a stable state along its axis. This stability is transmitted to the connecting ring 501, ultimately providing a stable and fixed position for the top of the telescopic spring 502. Therefore, the contact pressure between the peeling head 404 and the inner wall of the tank is provided by the telescopic spring 502.

[0050] Furthermore, positioning grooves 503 are provided on both sides of the rotating tube 206 along the height direction. Positioning plates 505 are embedded and connected in the positioning grooves 503. The inner wall of the positioning grooves 503 is slidably connected to the positioning plates 505. The positioning plates 505 are fixedly connected to the inner wall of the sealing ring 504.

[0051] As the guide tube 301 slides and elongates on the surface of the rotating tube 206, the rotating tube 206 drives the guide tube 301 to rotate. Meanwhile, the connecting cover 401 and the contact cover 405 slide along the inner wall of the tank in a contacting state. To prevent the guide tube 301 from rotating relative to the surface of the rotating tube 206, the positioning plate 505 abuts against the inner wall of the positioning groove 503, providing a limiting support for the sealing ring 504. The sealing ring 504 transmits this limiting support to the guide tube 301, thereby preventing the guide tube 301 from rotating and ensuring the stability of the sliding of the connecting cover 401 and the contact cover 405 along the inner wall of the tank.

[0052] The sealing ring 504 provides a seal for the gap between the guide tube 301 and the rotating tube 206. When the connecting cover 401 extends into the tank, the gravity of the connecting mechanism 4, the first booster 302, the bending tube 303, the vertical nozzle 304, and the second booster 305 causes the guide tube 301 to move vertically downward. When the positioning plate 505 abuts against the inner wall of the top of the positioning groove 503, the guide tube 301 stops moving downward, thus preventing the guide tube 301 from falling off the rotating tube 206.

[0053] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A steam cleaning device for oil tankers, comprising a steam generating mechanism (1) and a fixing mechanism (2), wherein the steam generating mechanism (1) includes a steam generator (101), a steam guide pipe (102), and a distribution pipe (103), and the fixing mechanism (2) is provided with several groups equidistantly along the length direction of the distribution pipe (103), and the top end of the fixing mechanism (2) is detachably connected to the distribution pipe (103); characterized in that: The fixing mechanism (2) includes a support pipe (201), a support plate (202), and a fixing pipe (203). The upper and lower ends of the support plate (202) are fixedly connected to the support pipe (201) and the fixing pipe (203) respectively. A steam turbine (204) is provided inside the fixing pipe (203). A steam outlet is opened at the side end of the fixing pipe (203). The steam turbine (204) is rotatably connected to the inner wall of the fixing pipe (203). The side wall of the steam turbine (204) is fixedly connected to the rotating pipe (206) through a limiting ring (205). The limiting ring (205) is embedded in the steam outlet. A telescopic mechanism (5) is sleeved on the outer surface of the rotating tube (206). A spraying mechanism (3) is provided at the bottom of the telescopic mechanism (5). The spraying mechanism (3) includes a guide tube (301) and a first booster (302). The upper and lower ends of the guide tube (301) are fixedly connected to the telescopic mechanism (5) and the first booster (302) respectively. A vertical nozzle (304) is fixedly connected to the bottom wall of the first booster (302). A horizontal nozzle (306) is fixedly connected to the side wall of the first booster (302). A connecting mechanism (4) is fixedly connected to the outer surface of the first booster (302).

2. The steam cleaning device for oil tankers according to claim 1, characterized in that: The diversion pipe (103) is provided with several sets of steam valves (104) at equal intervals along its length, and the steam valves (104) are arranged at intervals between several support pipes (201).

3. The steam cleaning device for oil tankers according to claim 1, characterized in that: The limiting ring (205) is fixedly connected to the side walls of the steam turbine (204) and the rotating pipe (206) on both sides, the limiting ring (205) is rotatably connected to the inner wall of the steam outlet, and the limiting ring (205) is attached to the side wall of the fixed pipe (203).

4. The steam cleaning device for oil tankers according to claim 1, characterized in that: The first booster (302) has a second booster (305) at the end away from the fixed pipe (203). The second booster (305) is mounted on the connecting mechanism (4). A bent pipe (303) is provided between the second booster (305) and the first booster (302). Several vertical nozzles (304) are fixedly connected to the bottom wall of the second booster (305). The two ends of the bent pipe (303) are fixedly connected to the first booster (302) and the second booster (305) respectively. The bent pipe (303) has extensibility.

5. The steam cleaning device for oil tankers according to claim 4, characterized in that: The connecting mechanism (4) includes a connecting cover (401), a torsion spring (402), and a connecting frame (403). The outer surface of the first booster (302) is fixedly connected to the connecting cover (401). Rotation holes are opened at both ends of the connecting cover (401). The torsion spring (402) is fixedly connected to the side wall of the second booster (305). The torsion spring (402) is rotatably connected to the inner wall of the rotation hole. The connecting frame (403) is sleeved on the torsion spring (402). Both ends of the connecting frame (403) are fixedly connected to the connecting cover (401) and the torsion spring (402), respectively. A limit frame (307) is fixedly connected to the end of the second booster (305) away from the torsion spring (402). The limit frame (307) is rotatably connected to the inner wall of the rotation hole. The limit frame (307) is in contact with the side wall of the connecting cover (401).

6. The steam cleaning device for oil tankers according to claim 5, characterized in that: The bottom of the connecting cover (401) is provided with several peeling heads (404), the peeling heads (404) are tooth-shaped, and the bottom of the peeling heads (404) is arc-shaped.

7. A steam cleaning device for oil tankers according to claim 5, characterized in that: The bottom wall of the second booster (305) is fixedly connected to an abutment cover (405). The bottom wall of the abutment cover (405) is provided with several peeling heads (404). The bottom wall of the abutment cover (405) is fixedly connected to the peeling heads (404), and the abutment cover (405) is in contact with the inner wall of the connecting cover (401).

8. The steam cleaning device for oil tankers according to claim 1, characterized in that: The guide tube (301) is sleeved on the rotating tube (206), the inner wall of the guide tube (301) is slidably connected to the rotating tube (206), and the upper and lower ends of the telescopic mechanism (5) are fixedly connected to the outer wall of the rotating tube (206) and the top end of the guide tube (301) respectively.

9. A steam cleaning device for oil tankers according to claim 8, characterized in that: The telescopic mechanism (5) includes a connecting ring (501), a telescopic spring (502), and a sealing ring (504). The connecting ring (501) is fixedly connected to the outer wall of the rotating tube (206), and the sealing ring (504) is fixedly connected to the top wall of the guide tube (301). The telescopic spring (502) is sleeved on the rotating tube (206), and the upper and lower ends of the telescopic spring (502) are fixedly connected to the connecting ring (501) and the sealing ring (504) respectively.

10. A steam cleaning device for oil tankers according to claim 9, characterized in that: The rotating tube (206) has positioning grooves (503) on both sides along the height direction. A positioning plate (505) is embedded in the positioning groove (503). The inner wall of the positioning groove (503) is slidably connected to the positioning plate (505). The positioning plate (505) is fixedly connected to the inner wall of the sealing ring (504).

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